I find it sorta funny that you both picked Margarito, when in fact the Punisher is a pressure fighter too & he beat him head to head. Plus the Margarito he beat was the version of Margarito that you both no doubt are referring to.

Are we talking about intelligent pressure fighters who don't neglect their defense? Or are we talking about relentless guys who plough forward, swinging for the fences & whose only defense is taking a face full of leather?

If we're talking about intelligent pressure that have head movement, can cut a ring off with wicked bodyshots I'd go with Lucas Matthysse & Rakhim Chakhkiev.

Most underrated pressure fighters of current times for me is Derrick Chisora, Salido, Bradley would be a good shout.